"You kno its love when your boyfriend has elbow surgery 2 days ago and takes u to a #ravens game ... especially when he's a Bengals fan," Kiebler said via Twitter Sunday.
Jonathan Ogden, an ex-offensive lineman for the Ravens, also posted a photo of himself with Clooney, who was sporting an arm sling.
People.com said it is unclear why Clooney had the operation.
Clooney can now be seen in the Hawaii-set family drama "The Descendents."
Handler slams Piers Morgan: 'You're a terrible interviewer'
LGBT community has 'bullied the American people': Bachmann